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Finding the Fourth Proportional to 282.12, 423.36 and 152.16

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Solution

The fourth proportional to 282.12, 423.36 and 152.16 is: 228.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.12 : 423.36 = 152.16 : x
  2. Step 2: Convert to fraction form
    282.12/423.36 = 152.16/x
  3. Step 3: Cross multiply
    282.12x = 423.36 × 152.16
  4. Step 4: Simplify right side
    282.12x = 64,418.46
  5. Step 5: Solve for x
    x = 64,418.46/282.12
  6. Step 6: Final answer
    x = 228.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.